Switchboard.



UNITED STATES PATENT CEEICE.

Specification of Letters Patent.

Patented June 12, 1906.

Application filed August '7, 1905. Serial No. 273,019.

T0 @ZZ whom it may concern:

Be it known that I, WILLIAM C. MARCHANT, a citizen ofthe United States, residing at 117 Beach avenue, Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Switchboards, of which the following is a specication.

My invention relates particularly to means for connecting electric conductors with switches; and my primary object is to provide means for readily effecting safe connections of this character.

My invention is illustrated in its referred embodiment in the accompanying awings, in which- Figure l represents a sectional view of a switchboard equippedA with my improvement, and Fig. 2 a plan view ofthe same.

In the construction shown,A represents a slab of marble or slate or the like; B, a switch-supporting block of conducting material having joined thereto by a pivot a switch-blade B 5 C, a connecting member serving to join a conductor C with the block B D, a block or contact member equipped with a spring-clip D for the switch-blade, and E a connecting member for joining a conductor (not shown) with the block D.

The block B, the member C, and the baseplate A are provided with registering perforations, which receive bolts c, the rear ends of which are effectively housed in countersinks c at the rear or back portion of the base-plate. The member C is equipped with a rearwardly or downwardly extending socket c2, which is loosely received by registering perforations c3 in the block B and the base-plate A. The socket c2 is provided with a bore receiving the end of the conductor C the latter being soldered in place. The socket c2 extends only partially through the base-plate, so that it will be observed that the conductor C" and the bolts c are effectively insulated from each other, except through the member C at the front of the base-plate.

The construction at the other end of the switch-namely, at the block D-is the same as that already described, so that it will'be uniecessary to describe the same again in deta-i It will be understood between the block B, for instance, and the conductor C', for instance, may be made by removin the member C and drawing the conductor t ough the opening in which the socket c2 is entered, effecting a solder joint between the socket and the conductor, and then replacing the member C. In the same manner a joint may be effected at the member E. The result of the construction is to remove all unsightly connections and also to maintain perfect insulation.

The foregoing detailed description has belen g'ven for clearness of understanding on y.

What I regard as new, and desire to secure by Letters Patent, is

1. The combination with a base-plate and a switch-block having registering perforations, of a member located in front of the base plate equipped with a wire socket housed within and withdrawable from the that the connection perforation of the base-plate, and connec-' tions between said member and the switchblock, for the purpose set forth.

2. The combination with a base-plate and a switch-block having bolt-receiving perforations and socket-receiving perforations, the bolt-receiving perforations being countersunk in the base-plate, a member having a socket extending through the switch-block and terminating within the base-plate, bolts joining said member with the switch-block and base-plate, and a conductor entered in said socket, for the purpose set forth.

3. The combination of a base-plate, a pair of switch-blocks, one of which is equip ed with a pivotal lug, and the other of which is equipped with a spring-clip, a switch pivoted on said pivotal lug and connected with said springclip, a base-plate supporting the switch-blocks, each switch-block and the adjacent portion of the base-plate being provided with a socket-receiving perforation and a pair of bolt-receiving perforations, a pair of connecting members having sockets extending through the switch-block and into the base-plate, and bolts connecting said IOO members With the switch-block and the baseperforation and provided With a. bore for replate, substantially as and for the purpose eevng a. conductor, for the purpose set set forth. forth.

4. The combination of a switch-block pro- WILLIAM C. MARCHANT. 5 vided With a socket-receiving perforation In presence of# and a member bolted thereto having a. rear- L. HErsLAn,

WardIy-extendng socket extending into said J. II. LANDES. 

